Related Party Transactions and Arrangements (Shared Office Space) (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2014 USD ($)
Affiliates of Former Manager [Member] \| Shared Office Space [Member]
Related Party Transaction [Line Items]
Payments of related party expenses	$ 1.8

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration